/Engine/Plugins/Editor/UVEditor/Source/UVEditorTools/Public/Selection/UVEditorMeshSelectionMechanic.h
void ModifyExistingSelection ( [TSet](API\Runtime\Core\Containers\TSet)< int32 > & SelectionSetToModify, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & SelectedIDs )